Difference between revisions of "Parallelogram"
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* Each diagonal divides the figure into 2 congruent [[triangle]]s | * Each diagonal divides the figure into 2 congruent [[triangle]]s | ||
| − | * Both diagonals together divide the figure into 2 pairs of | + | * Both diagonals together divide the figure into 2 pairs of congruent triangles. All 4 triangles have equal area. |
== Common Parallelograms == | == Common Parallelograms == | ||
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* [[Rectangle]] | * [[Rectangle]] | ||
| − | * [[Square]] | + | * [[Square (geometry) | square]] |
* [[Rhombus]] | * [[Rhombus]] | ||
Revision as of 17:42, 17 October 2006
A parallelogram is a special quadrilateral. Its properties include:
- Opposite sides are parallel
- Opposite sides are congruent
- Opposite angles are congruent
- Consecutive angles are supplementary
- Each diagonal divides the figure into 2 congruent triangles
- Both diagonals together divide the figure into 2 pairs of congruent triangles. All 4 triangles have equal area.
